Electronic nonequilibrium effect in ultrafast-laser-irradiated solids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00585129" target="_blank" >RIV/68378271:_____/24:00585129 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/24:00617067

Výsledek na webu

<a href="https://hdl.handle.net/11104/0352862" target="_blank" >https://hdl.handle.net/11104/0352862</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1402-4896/ad13df" target="_blank" >10.1088/1402-4896/ad13df</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electronic nonequilibrium effect in ultrafast-laser-irradiated solids

Popis výsledku v původním jazyce

This paper describes the effects of electronic nonequilibrium in a simulation of ultrafast laser irradiation of materials. The simulation scheme based on tight-binding molecular dynamics, in which the electronic populations are traced with a combined Monte Carlo and Boltzmann equation, enables the modeling of nonequilibrium, nonthermal, and nonadiabatic (electron-phonon coupling) effects simultaneously. The electron-electron thermalization is described within the relaxation-time approximation, which automatically restores various known limits such as instantaneous thermaliza tion (the thermalization time and Born-Oppenheimer(BO) approximation. The results of the simulation suggest that the non-equilibrium state of the electronic system slows down electron-phonon coupling with respect to the electronic equilibrium case in all studied materials: metals, semiconductors, and insulators. In semiconductors and insulators, it also alters the damage threshold of ultrafast nonthermal phase transitionsinduced by modification of the enteratomic potential due to electronic excitation.

Název v anglickém jazyce

Electronic nonequilibrium effect in ultrafast-laser-irradiated solids

Popis výsledku anglicky

This paper describes the effects of electronic nonequilibrium in a simulation of ultrafast laser irradiation of materials. The simulation scheme based on tight-binding molecular dynamics, in which the electronic populations are traced with a combined Monte Carlo and Boltzmann equation, enables the modeling of nonequilibrium, nonthermal, and nonadiabatic (electron-phonon coupling) effects simultaneously. The electron-electron thermalization is described within the relaxation-time approximation, which automatically restores various known limits such as instantaneous thermaliza tion (the thermalization time and Born-Oppenheimer(BO) approximation. The results of the simulation suggest that the non-equilibrium state of the electronic system slows down electron-phonon coupling with respect to the electronic equilibrium case in all studied materials: metals, semiconductors, and insulators. In semiconductors and insulators, it also alters the damage threshold of ultrafast nonthermal phase transitionsinduced by modification of the enteratomic potential due to electronic excitation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physica Scripta

ISSN

0031-8949

e-ISSN

1402-4896

Svazek periodika

99

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

23

Strana od-do

015934

Kód UT WoS článku

001128694700001

EID výsledku v databázi Scopus

2-s2.0-85180528349